A friend of mine has a Zenith DVB413 DVD player. It has 2 audio outputs (left and right) and a digital output that is designed to go to reciver equipped with surround sound, which decodes it and would provide a sub, center, and 2 rear outputs. We do not have a reciever such as this and we wondering if there are any standalone dac's or convertors available so that we could send a signal to powered speakers. by the way the output of the dvd player is an digital rca.